I did a drive check today, first time in months, and found I have a
high mismatch count on my RAID1 root device. What's the best way to
handle getting this cleaned up?
1) I'm running some smartctl tests as I write this.
2) Do I just do an
echo repair
to md126 or do I have to boot a rescue CD before I do that?
If you need more info please let me know.
Thanks,
Mark
c2stable ~ # cat /sys/block/md3/md/mismatch_cnt
0
c2stable ~ # cat /sys/block/md6/md/mismatch_cnt
0
c2stable ~ # cat /sys/block/md7/md/mismatch_cnt
0
c2stable ~ # cat /sys/block/md126/md/mismatch_cnt
222336
c2stable ~ # df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/md126 51612920 26159408 22831712 54% /
udev 10240 432 9808 5% /dev
/dev/md7 389183252 144979184 224434676 40% /VirtualMachines
shm 6151452 0 6151452 0% /dev/shm
c2stable ~ # cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md6 : active raid1 sdc6[2] sda6[0] sdb6[1]
247416933 blocks super 1.1 [3/3] [UUU]
md7 : active raid6 sdc7[2] sda7[0] sdb7[1] sdd2[3] sde2[4]
395387904 blocks super 1.2 level 6, 16k chunk, algorithm 2 [5/5] [UUUUU]
md3 : active raid6 sdc3[2] sda3[0] sdb3[1] sdd3[3] sde3[4]
157305168 blocks super 1.2 level 6, 16k chunk, algorithm 2 [5/5] [UUUUU]
md126 : active raid1 sdc5[2] sda5[0] sdb5[1]
52436032 blocks [3/3] [UUU]
unused devices: <none>
c2stable ~ #
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